/*
 * The contents of this file are subject to the terms 
 * of the Common Development and Distribution License 
 * (the License).  You may not use this file except in
 * compliance with the License.
 * 
 * You can obtain a copy of the license at 
 * https://glassfish.dev.java.net/public/CDDLv1.0.html or
 * glassfish/bootstrap/legal/CDDLv1.0.txt.
 * See the License for the specific language governing 
 * permissions and limitations under the License.
 * 
 * When distributing Covered Code, include this CDDL 
 * Header Notice in each file and include the License file 
 * at glassfish/bootstrap/legal/CDDLv1.0.txt.  
 * If applicable, add the following below the CDDL Header, 
 * with the fields enclosed by brackets [] replaced by
 * you own identifying information: 
 * "Portions Copyrighted [year] [name of copyright owner]"
 * 
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 */
 
/*
 * $Header: /cvs/glassfish/admin-cli/cli-api/src/java/com/sun/cli/jmx/cmd/ArgHelperOptionInfoImplBase.java,v 1.4 2006/11/10 21:14:44 dpatil Exp $
 * $Revision: 1.4 $
 * $Date: 2006/11/10 21:14:44 $
 */
package com.sun.cli.jmx.cmd;

import java.util.ArrayList;
import java.util.Iterator;
 


public class ArgHelperOptionInfoImplBase implements ArgHelper.OptionsInfo
{
	final ArrayList		mOptionDescriptions;
	
		public
	ArgHelperOptionInfoImplBase( )
		throws ArgHelper.IllegalOptionException
	{
		mOptionDescriptions	= new ArrayList();
	}
	
		public
	ArgHelperOptionInfoImplBase( String options )
		throws ArgHelper.IllegalOptionException
	{
		mOptionDescriptions	= new ArrayList();
		
		addOptions( options );
	}
	
		public String
	tokenToOptionName( String token )
	{
		final int	delimIndex	= token.indexOf( '=' );
		
		String	name	= token;
		
		if ( delimIndex > 0 )
		{
			name	= token.substring( 0, delimIndex );
		}
		
		return( name );
	}
	
		public String
	tokenToOptionData( String token )
	{
		final int	delimIndex	= token.indexOf( '=' );
		
		String	data	= null;	// return null if no data eg "--foo"
		
		if ( delimIndex > 0 )
		{
			// note: form "--foo=" is valid and should result in an empty string
			data	= token.substring( delimIndex + 1, token.length() );
		}
		
		return( data );
	}
	
		private static void
	dm( Object o )
	{
		System.out.println( o.toString() );
	}
	
		OptionDesc
	findOptionDesc( String token )
	{
		OptionDesc		info	= null;
		
		final String	optionName	= tokenToOptionName( OptionDesc.mapName( token ) );
		
		final Iterator iter	= mOptionDescriptions.iterator();
		while( iter.hasNext() )
		{
			final OptionDesc	optionDesc	= (OptionDesc)iter.next();
			
			if ( optionDesc.mName.equalsIgnoreCase( optionName ) )
			{
				info	= optionDesc;
				break;
			}
		}
		return( info );
	}
	
		public boolean
	isLegalOption( String token )
	{
		final boolean	isLegal	= (findOptionDesc( token ) != null);
		
		return( isLegal );
	}
	
		public void
	checkLegalOption( String token )
	{
		if ( ! isLegalOption( token ) )
		{
			throw new IllegalArgumentException( "illegal option: " + token );
		}
	}
	
		public int
	getNumValues( String token )
	{
		checkLegalOption( token );
		
		final OptionDesc	info	= findOptionDesc( token );
		
		return( info.mNumValues );
	}
	
		public boolean
	isBoolean( String token )
	{
		checkLegalOption( token );
		
		final OptionDesc	info	= findOptionDesc( token );
		
		return( info.mIsBoolean );
	}
	
		public void
	foundIllegalOption( String token  )
		throws ArgHelper.IllegalOptionException
	{
		throw new ArgHelper.IllegalOptionException( "illegal option: " + token );
	}
	
		public void
	addBoolean( String name )
		throws ArgHelper.IllegalOptionException
	{
		mOptionDescriptions.add( new OptionDesc( name ) );
	}
	
	
		public void
	addNonBoolean( String name, int numValues )
		throws ArgHelper.IllegalOptionException

	{
		mOptionDescriptions.add( new OptionDesc( name, numValues ) );
	}
	
	
	public final static char	MULTIPLE_DELIM	= ' ';
	public final static char	NUMVALUES_DELIM	= ',';
	
		public void
	addOptions( String list )
		throws ArgHelper.IllegalOptionException
	{
		final String []	names	= list.split(" ");
		
		for (int i = 0; i < names.length; ++i) {
                     final String[] data = names[i].split("" + NUMVALUES_DELIM);

                     if (data.length == 1) {
                         addBoolean(data[0]);
                     } else {
                         addNonBoolean(data[0],
                                       Integer.valueOf(data[1]).intValue());
                     }
                 }
	}
		
		
	
	public final static class OptionDesc
	{
		public String	mName;	// include "-" or "--" prefix
		public int		mNumValues;
		public boolean	mIsBoolean;
		
			void
		validateName( String name )
			throws ArgHelper.IllegalOptionException
		{
			if ( ! name.startsWith( "-" ) )
			{
				throw new ArgHelper.IllegalOptionException( "invalid option name: " + name );
			}
		}
		
		OptionDesc( String name, int numValues )
			throws ArgHelper.IllegalOptionException
		{
			mName		= mapName( name );
			
			validateName( mName );
			
			if ( numValues == 0 )
			{
				throw new IllegalArgumentException( "use OptionDesc( name ) for boolean options" );
			}
			
			mNumValues	= numValues;
			mIsBoolean	= false;
		}
		
		OptionDesc( String name )
			throws ArgHelper.IllegalOptionException
		{
			mName		= mapName( name );
			
			validateName( mName );
			
			mIsBoolean	= true;
			mNumValues	= 1;
		}
		
			static String
		mapName( String name )
		{
			String	mappedName	= name;
			
			if ( ! name.startsWith( "-" ) )
			{
				final String	prefix	= (name.length() == 1) ? "-" : "--";
				
				mappedName	= prefix + name;
			}
			return( mappedName );
		}
		
			public String
		toString()
		{
			if ( mIsBoolean )
			{
				return( mName + ":boolean" );
			}
			return( mName + ":" + mNumValues + " values" );
		}
	}

}

